scholarly journals Building a Private LoRaWAN Platform

LoRaWAN technology has been here for several years as one of LPWAN technologies. It consists of various components such as end nodes, a gateway, a network server, and an application server at the minimum. The servers have been exclusive products of commercial companies, and not many experimental or academic ones are available. Recently one such software has been developed. However, few fully functional academic ones have been reported. In this study, we implement a fully functional private independent LoRaWAN platform for the academic research of LPWAN Internet of Things (IoT) and demonstrate that our platform can support not only end-to-end LoRaWAN communication but also graphical user interface on an embedded and limited computing power system.

Author(s):  
Dong-Sheng Jeng ◽  
Yan Lu

Wave-induced seabed instability around marine facilities has been recognized as a key issue in the design of marine facilities. Most previous studies have been focused on individual issues in the area, without a global consideration. This limits the research outcomes to pure academic research, and practical engineers are rarely to use it in the real design, as it is too complicated. In this study, first we establish a new model for random wave-induced residual pore pressure in marine sediments. Second, we integrate the new model with previous work, including analytical and numerical models, into a simple package (PORO-WSSI). In the model, a GUI (Graphical User Interface) will be included. The main feature of the PORO-WSSI will be outlined and numerical results will be presented and discussed.


Author(s):  
Srutanjay Ramesh

Abstract: In this paper, an autonomous Mars Rover is designed using the software SOLIDWORKS and a mechanical model is developed with in-depth simulations to analyse the functions of the vehicle. Furthermore, a graphical user interface is also developed based on the principles of Internet of Things using Node-Red to control and monitor the rover remotely. The red planet, i.e.; Mars, has been the centre of attraction for over 2 decades now, with astrophysicists and engineers working in unison to build devices and launch shuttle programs to understand and learn about the planet and gather more intelligence. This paper proposes the detailed development of a 6-wheeled rover that could explore the terrains of Mars, featuring a stereo vision system that could provide live video coverage and a robotic arm that can facilitate investigation of the surface, in an attempt to contribute to and fulfil the human race’s mission to Mars. It employs multiple onboard sensors that can acquire necessary data pertaining to the environmental conditions and actuators that enable functionality, with the sensors and actuators integrated onto a control system based on microcontrollers and microprocessors such as Arduino and Raspberry Pi. The rover also has a provision of a payload bay in its rear which enables it to carry loads. The SOLIDWORKS tool from Dassault systèmes is used to design and model the rover and carry out static analysis and motion studies. The GUI developed in the further sections allows overall voice control for the user and makes the task of monitoring the rover a much simpler task by eliminating the complexity that rises due to multiple control platforms. Keywords: Mars Rover, Graphical User Interface (GUI), Chassis, Mastcam, Actuators, Internet of Things (IoT), Nitinol, Payload


2019 ◽  
Vol 11 (2) ◽  
pp. 138-148
Author(s):  
Adri Senen ◽  
Titi Ratnasari ◽  
Dwi Anggaini

The level of reliability of a distribution system is very important to ensure the continuity of electricity supply to consumers. This research was conducted to calculate the Saidi reliability index and the Saifi 20 kV distribution system in Pinang PLN in 2017 with the help of the Matlab R2008a application. A GUI is one of the Matlab programs that is widely used in describing information and commands, and its users are possible to form and format themselves according to the needs of the system itself. With the help of this software, it is hoped that it will be easier to calculate the system reliability index, namely the calculation of SAIDI and SAIFI, then the results can be made so that the database is more organized. The calculation results obtained will show the highest and lowest SAIDI and SAIFI values ​​that occur in each of the current months, making it easier to evaluate, analyze and improve the reliability of the electrical power system network in the future, especially in PT.


1996 ◽  
Vol 33 (2) ◽  
pp. 108-118
Author(s):  
H. B. Gooi ◽  
S. P. Zhu

A graphics simulation environment for power system education This paper describes a LAN-based system for load flow simulation studies. The system comprises an automatic one-line generator, a graphical user interface (GUI), print and database supporting tools. One-line displays can be generated either manually or automatically. The GUI was designed using the object-oriented programming (OOP) paradigm.


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